Loss of export markets may well lead to a short term glut on the U.S. market and domestic prices may fall. But if the pork producers can't make money off their pigs then they'll stop raising them. You will see farmers cut back on supply rather quickly, and your bacon and pork prices will probably remain steady if not go up on the long term.
May?
So what? Why do I give sh!t about pig farmers, one of the biggest employers of illegal and imported stoop labor?